diff --git a/homeassistant/components/huum/binary_sensor.py b/homeassistant/components/huum/binary_sensor.py
index 7bc03e9fe947..cb5da1879c75 100644
--- a/homeassistant/components/huum/binary_sensor.py
+++ b/homeassistant/components/huum/binary_sensor.py
@@ -12,6 +12,8 @@ from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from .coordinator import HuumConfigEntry, HuumDataUpdateCoordinator
 from .entity import HuumBaseEntity
 
+PARALLEL_UPDATES = 0
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
diff --git a/homeassistant/components/huum/climate.py b/homeassistant/components/huum/climate.py
index c520880e6919..9eabd0344ac7 100644
--- a/homeassistant/components/huum/climate.py
+++ b/homeassistant/components/huum/climate.py
@@ -24,6 +24,8 @@ from .entity import HuumBaseEntity
 
 _LOGGER = logging.getLogger(__name__)
 
+PARALLEL_UPDATES = 1
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
diff --git a/homeassistant/components/huum/light.py b/homeassistant/components/huum/light.py
index 9d3ec54101df..5881d2d08b96 100644
--- a/homeassistant/components/huum/light.py
+++ b/homeassistant/components/huum/light.py
@@ -15,6 +15,8 @@ from .entity import HuumBaseEntity
 
 _LOGGER = logging.getLogger(__name__)
 
+PARALLEL_UPDATES = 1
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
diff --git a/homeassistant/components/huum/number.py b/homeassistant/components/huum/number.py
index 4c3a6ff0cae3..161fd4f5f36b 100644
--- a/homeassistant/components/huum/number.py
+++ b/homeassistant/components/huum/number.py
@@ -16,6 +16,8 @@ from .entity import HuumBaseEntity
 
 _LOGGER = logging.getLogger(__name__)
 
+PARALLEL_UPDATES = 1
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
diff --git a/homeassistant/components/huum/quality_scale.yaml b/homeassistant/components/huum/quality_scale.yaml
index b7bb9b991ce9..e36f91b159cb 100644
--- a/homeassistant/components/huum/quality_scale.yaml
+++ b/homeassistant/components/huum/quality_scale.yaml
@@ -45,7 +45,7 @@ rules:
     comment: |
       PLANNED: Remove _LOGGER.error from coordinator.py — the message is already
       passed to UpdateFailed, so logging it separately is redundant.
-  parallel-updates: todo
+  parallel-updates: done
   reauthentication-flow: todo
   test-coverage:
     status: todo
diff --git a/homeassistant/components/huum/sensor.py b/homeassistant/components/huum/sensor.py
index 9629fcfdf885..0ceed8510d0d 100644
--- a/homeassistant/components/huum/sensor.py
+++ b/homeassistant/components/huum/sensor.py
@@ -14,6 +14,8 @@ from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 from .coordinator import HuumConfigEntry, HuumDataUpdateCoordinator
 from .entity import HuumBaseEntity
 
+PARALLEL_UPDATES = 0
+
 
 async def async_setup_entry(
     hass: HomeAssistant,